Electrically-heated boiler



GEORGE FLEMING, OF PRINCETON, TEXAS.

. Specification of Letters Patent.

ELEcTRIcALLY-HEATED norman.v

Patented Nov. 25, 191e.

Appiiation and January 29, 1919. seriai No. 273,776.

To all whom it may concern Be it known 4that I, Gixiuor. FLmiiNo7 a citizen of the lUnited States, residing at Princeton, in the county et' Collin 'and State 'of' Texas, havein'vented certain new anduseful 'Improvements in Electrically-Heated Boilers, of which the followiingr is a specilication.

The invention relates to boilers and more particularly to" means wherebythe saine is electrically heated, the purpose heiingh toprovidea compact structure which occupies al -minimum amount ot space and is effectiv nection' vwith various types-ot-boilers for 'and reliable in operationl The invention is adapted for use in couheatingl Water for generating steam, theelectric heater. 'being -con'ipjaratively small and' ar'i-: in,'qe d within the .water space'lof they' 'boiler and surrounded by the water, thereby being enabled to quickly heat vhe Water for 'anydesired purpose.

The-drawing illustrates a preferred em-v bodiment of`the invention. "However, it is to beunderstood that in adaptingr thesaine to meet differentconditions, various'changes infthe forni, proportion,and minordetailsl of'construction may 'bereso'rtel' to without departing from the-nature of theinifention Aas claimed hereinafter. Referringto thc-drawing hereto attached,

" 'Finn-relisa'vertical'longitudinal section oa 'boiler 'provided with an electric heater embed ying the invent-ion.

."Fig. -2` is .a1-transverse section on the linel likeV referencecharacters.

purposes.' '.--'The electric: heater is locatedwithui' the 'lhe'tboilcr Linay lie-o'tauydesign or cai-,- pacity and isprevided at4 one end4 with an opening which is closed by means of aplate 2, whereby access pose. `The boiler is shown i'irovided .with 4a Steam'spacefl troni which the steam nary- De 'taken for 'driving' an engine or toi' other i water space of the boiler and is mounted upon` pillows'i which may be of any insulating material' to 4prevent loss" of current.

' joint.

. supply.

ly lie readily had to the interior of tl'ielioiler fora-ny' desired pur- The .heater comprises ajshell or casing 5 which may be of a'ny'size or construction. As indicated, the casing 5 is of cylindrical forni and is disposed horizontally within the boiler. .A plate 6 closes th-{open end of the casing, thereby providing for access to the interior of the 'using for any purpose. A tube 7 projects axially from the plate 6 and passes through an end Wall of the boiler and is electrically. insulated therefrom. A plurality of fittings 8 serve to insulate the tube 7 from the end ofthe boiler and also to insure the'forination of a. water-tight A wire 9 passes through thetube 7 and is adapted to be` connected with any suitable source of supply of electricity. The tube 7 is filled with insulating material to -prevent contact of the wire9 therewith and also insure a close joint. A Wire 10 is el ctrically connected with the tube 7 andis a minal or' pole of the source of' electric ie electric heating means is located Awithin the casing 5 and may be of any well known form. -In accordance with the present invention it is preferred to provide a plurality of rings 11 which are connected by means of arms 12 with hubs 13. The arms l). and-hubs 13 inay be of any insulating inaapted-to be connected withthe'other terterial, whereas the rings 11 are preferably f of metal and are provided at their .sides with projections 14 which arc'in Contact when the heatingelementsin position. A. shaft -15 lis Vdisl'iosod ,centrally within the casing 5 and is supported at its ends in the end walls .or heads of the casino; The .healingr elements are 'strungupon the shaft 15 and the latter is oit non-circular forni in cross section -jo as to maintain the lheatirrtr elements in given relative positions, the hubs of the heating elements being provided With'openii'igrs tov snugly receive the shaft 15 and thereby prevent any rclaltivo turning of the heating elements upon the shaft. The electric heater. is supported intermediate its ends by a bed 16`ot' insulating material, said bed being in the forni of a strip; One et the tei-initial rings is electrically connected with the wire 9, whereas the other terminal ring?r electrically connected with the casing 5, as indicatori at 17;. n this manner the circuit entering' by way ot the wire' 9 passes through the serie-s of rings and enters the Lube i lo the Wirf': lO, thereby completing, the' circuit,

As indicated the elect-rie heater is disposed 5 within the wn-ter Space of the boiler and when the circuit is closed the. heating elements generare lient which heats the Walls il eine' und the latter in turn radiates i. and mises the temperature ot' the n in which the heater is in'nnersed. The :t ninja he regulited Aby means of an nir :e 1S which extends through a side of the ,.ler end a side ot the :using 5. Fittings maintain n close joint between the tube 15 i.' 'and the boiler. A suitable valve 201is pevided inthe length of the tube 18 to regulate the mhnission oi: air into the casing 5 for moderating the temperature of the electric heater occasion may require. 23 The foregoing description andthe drawing have. reference to what may be considered the preferred, or approved, form of my invention. It is to be understood that I may Ineke such changes in construction and arrangement :md combination of parte, inaterials, dimensions, et cetera, es may prove expedient and fall Within the scope of the appended claim.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Iatent isr An electric heater of the character specied1 comprising e easing, a. shaft Within the casing, insulating elements mounted upon the shet't and electrically heated rines supportedl by the said insulating elements and provided et their sides with projections which are in Contact.

In testimony whereof I :rilix my signature in presence of two Witnesses.

GEORGE FLEMIN. Witnesses:

A T. ROGERS, T. A. CURTIS. 

